--- a/tracking.cfg	Tue Dec 05 16:15:44 2017 -0500
+++ b/tracking.cfg	Thu Dec 07 15:13:06 2017 -0500
@@ -51,7 +51,7 @@
 pyramid-level = 5
 # number of displacement to test minimum feature motion
 ndisplacements = 3
-# minimum displacement to keep features (px)
+# minimum displacement to keep features (world distance unit or px)
 min-feature-displacement = 0.05
 # maximum feature acceleration
 acceleration-bound = 3
@@ -68,7 +68,7 @@
 # minimum eigen value of a 2x2 normal matrix of optical flow equations
 min-feature-eig-threshold = 1e-4
 # minimum length of a feature (number of frames) to consider a feature for grouping
-min-feature-time = 9
+min-feature-time = 15
 # Min Max similarity parameters (Beymer et al. method)
 # connection distance in feature grouping (world distance unit or px)
 mm-connection-distance = 2.68813545522